Cambridge Sound Qt X 300 + 4x E-P-W-16-4 Kit – 1,600 SF Sound Masking, Paging & Music
Cambridge Sound Qt X 300 + 4x E-P-W-16-4 Kit – 1,600 SF Sound Masking, Paging & Music is backordered and will ship as soon as it is back in stock.
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Product Overview
This Cambridge Qt X 300 sound masking kit gives an office suite, clinic, or department floor of up to about 1,600 sq ft a complete speech privacy system with paging and background music from one set of ceiling emitters. It pairs one Qt X 300 three-zone controller with four E-P-W-16-4 packs, for sixteen white Qt Active Emitters with 16 ft patch cables. Direct-field emitters raise the background sound level just enough to make nearby conversations unintelligible, while the same emitters carry announcements and music. Actual coverage depends on ceiling height and layout, and the Qt X 300 scales to 36,000 sq ft as you add emitters.
What's Included
- 1 x Cambridge Sound Qt X 300 3-zone sound masking controller (911.0078.900)
- 4 x Cambridge Sound Qt E-P-W-16-4 Active Emitter 4-packs, white, each with 4 x 16 ft patch cables (911.0899.900) — 16 emitters total
Required, sold separately: Qt Active Emitters are powered through a Cambridge PS-AE-3 Active Emitter Power Supply and a PI-AE power injector installed next to the first emitter on each run.

Product Description
The Qt X 300 is a compact, networked sound masking controller with three controllable outputs, each with A and B cable runs, supporting up to 50 Qt Active Emitters per run. Each output can be set to its own masking level, paging and music level, and spectrum, so an open work area, private offices, and a reception area can be tuned separately. Two analog inputs bring in a paging source and a background music player, and the AVB network port lets multiple Qt X controllers share audio in larger commercial sound masking installations. The Qt Active Emitters are direct-field ceiling emitters: the driver faces the room, so masking spreads evenly and paging stays intelligible. Each emitter produces 30 to 60 dBA of masking and up to 74 dBA of paging or music at 1 meter. Emitters daisy-chain over Category UTP cable with RJ-45 connectors, and rear switches trim level in 1.5 dB steps for fine tuning during commissioning.

Creation Networks offers three Qt Active Emitter kits built around the same emitter pack. Choose by coverage area and zoning:
| Kit | Controller | Emitters | Approx. Kit Coverage* |
|---|---|---|---|
| 800 sq ft kit | Qt X 300, 3 zones | 8 (2 x E-P-W-16-4) | ~800 sq ft |
| 1,600 sq ft kit (this kit) | Qt X 300, 3 zones | 16 (4 x E-P-W-16-4) | ~1,600 sq ft |
| 2,400 sq ft kit | Qt X 600, 6 zones | 24 (6 x E-P-W-16-4) | ~2,400 sq ft |
*Coverage estimates assume roughly 100 sq ft per emitter; actual layout depends on ceiling height and type.
Key Features
- Sized for About 1,600 sq ft — Sixteen active emitters cover an office suite, clinic, or department floor.
- Masking, Paging, and Music — One ceiling emitter network carries speech privacy masking, overhead paging, and background music.
- Three Independent Zones — Masking level, aux level, and spectrum are set per output so each area can be tuned on its own.
- Direct-Field Active Emitters — Room-facing drivers spread masking evenly and keep announcements clear.
- Expandable to 36,000 sq ft — Add E-P-W emitter packs on the same Qt X 300 as the office grows.
- Networked Management — AVB networking lets multiple Qt X controllers share audio across larger deployments.
- Plenum-Rated Emitters — Emitters are ETL listed and evaluated to UL 2043 for installation in air handling spaces.
- Simple Cabling — Emitters daisy-chain over standard Category UTP cable with RJ-45 connectors.
- Five-Year Warranty — Both the Qt X 300 and the Qt Active Emitters are covered by Biamp's five-year warranty.

Typical Applications
- Commercial meeting space
- Conference room
- Huddle room
- Government space
- Training room
Technical Specifications
| Specification | Detail |
|---|---|
| Kit SKU | CN-QTX300-16EPW16 |
| Approx. Kit Coverage | ~1,600 sq ft (layout dependent) |
| Controller | Qt X 300 (911.0078.900) |
| Zones / Outputs | 3 outputs, each with A and B runs |
| Controller Coverage | Up to 36,000 sq ft |
| Active Emitter Capacity | 50 per run, 100 per output |
| Max Signal Cable Run | 1,000 ft (304.8 m) |
| Audio Inputs | 2 analog (paging / music); AVB networked audio |
| Controller Dimensions | 3.5 x 11 x 3.8 in (89 x 279 x 97 mm) |
| Controller Weight | 1.5 lb (0.68 kg) |
| Emitters Included | 16 Qt Active Emitters, white, with 16 x 16 ft patch cables |
| Masking Frequency Response | 100 Hz to 6.8 kHz |
| Paging/Music Frequency Response | 105 Hz to 12 kHz |
| Masking SPL | 30 to 60 dBA @ 1 m |
| Max Paging/Music SPL | 74 dBA @ 1 m |
| Emitter Dispersion | 170° conical / half space |
| Emitter Impedance | 40 kΩ |
| Emitter Power | 2 W; powered via PS-AE-3 and PI-AE (sold separately) |
| Emitter Attenuation | 0, -1.5, -3, -4.5 dB |
| Emitter Connections | 2 x RJ-45, Category UTP (8 conductor) |
| Emitter Size / Weight | 3.25 in dia x 3.5 in deep; 6.5 oz |
| Emitter Certifications | ETL listed (USA and Canada); evaluated to UL 2043 |
| Warranty | Biamp five-year warranty |
Specifications sourced from Biamp/Cambridge Sound manufacturer documentation. Kit coverage is an estimate.
Frequently Asked Questions
How much area does this kit cover?
With sixteen active emitters, the kit is sized for approximately 1,600 sq ft. Final emitter spacing depends on ceiling height, ceiling type, and room layout, and more emitters can be added to the Qt X 300 for larger spaces.
What else do I need to power the Qt Active Emitters?
Active emitters need a PS-AE-3 power supply and a PI-AE power injector installed next to the first emitter on each run. One PI-AE has two channels, each powering up to 25 active emitters, and one PS-AE-3 feeds up to three injectors.
What is this kit compatible with?
The Qt X 300 drives Qt standard or Qt Active Emitters and shares audio with other Qt X controllers over AVB. Additional emitters, paging stations, and accessories are available in the Cambridge Sound collection.
Can this system handle paging and background music?
Yes. The two analog inputs on the Qt X 300 accept a paging source and a music player, and the same active emitters reproduce both alongside the masking signal.
How are the emitters installed?
Emitters mount in ceiling tile or hard ceilings on a planned grid and daisy-chain over Category UTP cable. A layout drawing sets emitter spacing and zone boundaries before installation.
Can I expand the system later?
Yes. The Qt X 300 supports up to 36,000 sq ft across three outputs, so you can add E-P-W emitter packs and power injectors as the space grows.
What warranty and support are included?
The Qt X 300 and Qt Active Emitters carry Biamp's five-year warranty. Creation Networks provides sound masking design, installation, commissioning, and ongoing support nationwide.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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